SSII
| Acronym | Definition |
|---|---|
| SSII | Societe de Services et d'Ingenierie Informatique |
| SSII | Service Sector Innovation Index (EU) |
| SSII | Scenario Systems International, Inc. (Chicago, IL) |
| SSII | Super Scout II (truck model) |
| SSII | Special Serial Input Interface |
| SSII | Suitability and Security Investigations Index |
| SSII | Scientific Software International, Inc. (est. 1972; Lincolnwood, IL) |